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validation.go
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validation.go
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package validation
import (
"fmt"
"strings"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api/validation"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util/fielderrors"
"github.com/docker/distribution/registry/api/v2"
"github.com/openshift/origin/pkg/image/api"
)
func MinimalNameValidation(name string, prefix bool) (bool, string) {
for _, illegal := range []string{"%", "/"} {
if strings.Contains(name, illegal) {
return false, fmt.Sprintf(`may not contain "%s"`, illegal)
}
}
return true, ""
}
func ValidateImageStreamName(name string, prefix bool) (bool, string) {
// Sanity check to make sure we never allow invalid characters, no matter what RepositoryNameComponentRegexp allows
if ok, msg := MinimalNameValidation(name, false); !ok {
return false, msg
}
if len(name) < v2.RepositoryNameComponentMinLength {
return false, fmt.Sprintf("must be at least %d characters long", v2.RepositoryNameComponentMinLength)
}
if !v2.RepositoryNameComponentAnchoredRegexp.MatchString(name) {
return false, fmt.Sprintf("must match %q", v2.RepositoryNameComponentRegexp.String())
}
return true, ""
}
// ValidateImage tests required fields for an Image.
func ValidateImage(image *api.Image) fielderrors.ValidationErrorList {
result := fielderrors.ValidationErrorList{}
result = append(result, validation.ValidateObjectMeta(&image.ObjectMeta, false, MinimalNameValidation).Prefix("metadata")...)
if len(image.DockerImageReference) == 0 {
result = append(result, fielderrors.NewFieldRequired("dockerImageReference"))
} else {
if _, err := api.ParseDockerImageReference(image.DockerImageReference); err != nil {
result = append(result, fielderrors.NewFieldInvalid("dockerImageReference", image.DockerImageReference, err.Error()))
}
}
return result
}
// ValidateImageStream tests required fields for an ImageStream.
func ValidateImageStream(stream *api.ImageStream) fielderrors.ValidationErrorList {
result := fielderrors.ValidationErrorList{}
result = append(result, validation.ValidateObjectMeta(&stream.ObjectMeta, true, ValidateImageStreamName).Prefix("metadata")...)
// Ensure we can generate a valid docker image repository from namespace/name
if len(stream.Namespace) > 0 && len(stream.Namespace) < v2.RepositoryNameComponentMinLength {
result = append(result, fielderrors.NewFieldInvalid("metadata.namespace", stream.Namespace, fmt.Sprintf("must be at least %d characters long", v2.RepositoryNameComponentMinLength)))
}
if len(stream.Namespace+"/"+stream.Name) > v2.RepositoryNameTotalLengthMax {
result = append(result, fielderrors.NewFieldInvalid("metadata.name", stream.Name, fmt.Sprintf("'namespace/name' cannot be longer than %d characters", v2.RepositoryNameTotalLengthMax)))
}
if stream.Spec.Tags == nil {
stream.Spec.Tags = make(map[string]api.TagReference)
}
if len(stream.Spec.DockerImageRepository) != 0 {
if _, err := api.ParseDockerImageReference(stream.Spec.DockerImageRepository); err != nil {
result = append(result, fielderrors.NewFieldInvalid("spec.dockerImageRepository", stream.Spec.DockerImageRepository, err.Error()))
}
}
for tag, tagRef := range stream.Spec.Tags {
if len(tagRef.DockerImageReference) > 0 && tagRef.From != nil {
result = append(result, fielderrors.NewFieldInvalid(fmt.Sprintf("spec.tags[%s]", tag), "", "only 1 of dockerImageReference or from may be set"))
}
}
for tag, history := range stream.Status.Tags {
for i, tagEvent := range history.Items {
if len(tagEvent.DockerImageReference) == 0 {
result = append(result, fielderrors.NewFieldRequired(fmt.Sprintf("status.tags[%s].Items[%d].dockerImageReference", tag, i)))
}
}
}
return result
}
func ValidateImageStreamUpdate(newStream, oldStream *api.ImageStream) fielderrors.ValidationErrorList {
result := fielderrors.ValidationErrorList{}
result = append(result, validation.ValidateObjectMetaUpdate(&oldStream.ObjectMeta, &newStream.ObjectMeta).Prefix("metadata")...)
result = append(result, ValidateImageStream(newStream)...)
return result
}
// ValidateImageStreamStatusUpdate tests required fields for an ImageStream status update.
func ValidateImageStreamStatusUpdate(newStream, oldStream *api.ImageStream) fielderrors.ValidationErrorList {
result := fielderrors.ValidationErrorList{}
result = append(result, validation.ValidateObjectMetaUpdate(&oldStream.ObjectMeta, &newStream.ObjectMeta).Prefix("metadata")...)
newStream.Spec.Tags = oldStream.Spec.Tags
newStream.Spec.DockerImageRepository = oldStream.Spec.DockerImageRepository
return result
}
// ValidateImageStreamMapping tests required fields for an ImageStreamMapping.
func ValidateImageStreamMapping(mapping *api.ImageStreamMapping) fielderrors.ValidationErrorList {
result := fielderrors.ValidationErrorList{}
hasRepository := len(mapping.DockerImageRepository) != 0
hasName := len(mapping.Name) != 0
switch {
case hasRepository:
if _, err := api.ParseDockerImageReference(mapping.DockerImageRepository); err != nil {
result = append(result, fielderrors.NewFieldInvalid("dockerImageRepository", mapping.DockerImageRepository, err.Error()))
}
case hasName:
default:
result = append(result, fielderrors.NewFieldRequired("name"))
result = append(result, fielderrors.NewFieldRequired("dockerImageRepository"))
}
if ok, msg := validation.ValidateNamespaceName(mapping.Namespace, false); !ok {
result = append(result, fielderrors.NewFieldInvalid("namespace", mapping.Namespace, msg))
}
if len(mapping.Tag) == 0 {
result = append(result, fielderrors.NewFieldRequired("tag"))
}
if errs := ValidateImage(&mapping.Image).Prefix("image"); len(errs) != 0 {
result = append(result, errs...)
}
return result
}